body {
    height: 100vh;
    user-select: none;
    cursor: default;
    font-size: 14px;
    overflow: hidden;
    font-family: "PingFang SC", Arial, "Microsoft YaHei", sans-serif;
  }
  
  #app {
    height: 100%;
    overflow: hidden;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }